Go语言有一套完整的操作命令，掌握好它们，开发事半功倍哦，下面就来介绍这些命令的使用方法。
在终端直接输入 go 所有的命令就全部出来了：
build compile packages and dependencies
clean remove object files and cached files
doc show documentation for package or symbol
env print Go environment information
fix update packages to use new APIs
fmt gofmt (reformat) package sources
generate generate Go files by processing source
get add dependencies to current module and install them
install compile and install packages and dependencies
list list packages or modules
mod module maintenance
work workspace maintenance
run compile and run Go program
test test packages
tool run specified go tool
version print Go version
vet report likely mistakes in packages